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Acquired Intangible Assets | 12 Months Ended
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Sep. 30, 2021
Acquired Intangible Assets |
Acquired Intangible Assets | 8. Acquired Intangible Assets As of September 30, 2021 and 2020, intangible assets are as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021 | ​ | September 30, 2020
​ | ​ | Weighted | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Remaining | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortization | ​ | ​ | ​ | Accumulated | ​ | ​ | ​ | Amortization | ​ | ​ | ​ | Accumulated | ​ | ​
​ |  | Period |  | Gross |  | Amortization |  | Net |  | Period |  | Gross |  | Amortization |  | Net
​ | ​ | (Amounts in thousands)
Customer list |  | 3 years | ​ | $ | 90 | ​ | $ | 71 | ​ | $ | 19 |  | 4 years | ​ | $ | 90 | ​ | $ | 62 | ​ | $ | 28
​ Amortization expense on these intangible assets was $9 thousand and $9 thousand for fiscal 2021 and 2020, respectively. Annual amortization expense related to intangible assets for each of the following successive fiscal years is as follows:
​ | ​ | ​ | ​
Fiscal year ending September 30: |  | (Amounts in thousands)
2022 |  | ​ | 9
2023 |  | ​ | 9
2024 |  | ​ | 1
Total | ​ | $ | 19
​

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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